/*
 * Copyright (C) 2021 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.tumblr.backboard.Utils;

import java.math.BigDecimal;
import java.text.DecimalFormat;

/**
 * 精确计算
 *
 * @author stt
 * @since 2021-05-07
 */
public class MathUtils {
    private MathUtils() {
    }

    /**
     * Subtract
     *
     * @param f1 float1
     * @param f2 float2
     * @return subtract value
     */
    public static float floatToSubtract(float f1, float f2) {
        BigDecimal b1 = BigDecimal.valueOf(f1);
        BigDecimal b2 = BigDecimal.valueOf(f2);
        DecimalFormat df = new DecimalFormat("0.00000");
        return Float.valueOf(df.format(b1.subtract(b2)));
    }

    /**
     * Addition
     *
     * @param f1 float1
     * @param f2 float2
     * @return Addition value
     */
    public static float floatToAdd(float f1, float f2) {
        BigDecimal b1 = BigDecimal.valueOf(f1);
        BigDecimal b2 = BigDecimal.valueOf(f2);
        DecimalFormat df = new DecimalFormat("0.00000");
        return Float.valueOf(df.format(b1.add(b2)));
    }
}
